pub fn bch_create_checksum_long(hrp: &str, data: &[u8]) -> [u8; 15]Expand description
Compute the 15-character BCH checksum for the long code.
Same algorithm as bch_create_checksum_regular but uses the long-code
polymod parameters (GEN_LONG, LONG_SHIFT, LONG_MASK) and target
constant (MK_LONG_CONST). Produces a 15-element checksum array.